6. Iridium is a radioactive elementused fortherapy in nucle armedicine. It decaysto% or 24, of its original mass after 74 days. After 148 days, it decaysto %, or 2?, of its original mass. a) What fraction remains after 222 days? write fraction as apowerof 2 with a negative exponentalso. bị What fraction remains after 370 days? Write fraction as apower of 2 with a negative exponent also.

6. Iridium is a radioactive elementused fortherapy in nucle armedicine. It decaysto% or 24, of its original mass after 74 days. After 148 days, it decaysto %, or 2?, of its original mass. a) What fraction remains after 222 days? write fraction as apowerof 2 with a negative exponentalso. bị What fraction remains after 370 days? Write fraction as apower of 2 with a negative exponent also.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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